13321001231 has 2 divisors, whose sum is σ = 13321001232. Its totient is φ = 13321001230.

The previous prime is 13321001203. The next prime is 13321001263. The reversal of 13321001231 is 13210012331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13321001231 - 2⁶ = 13321001167 is a prime.

It is a super-2 number, since 2×13321001231² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13321031231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660500615 + 6660500616.

It is an arithmetic number, because the mean of its divisors is an integer number (6660500616).

Almost surely, 2^13321001231 is an apocalyptic number.

13321001231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321001231 is an equidigital number, since it uses as much as digits as its factorization.

13321001231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13321001231 its reverse (13210012331), we get a palindrome (26531013562).

It can be divided in two parts, 1332100 and 1231, that added together give a palindrome (1333331).

The spelling of 13321001231 in words is "thirteen billion, three hundred twenty-one million, one thousand, two hundred thirty-one".